--deploy option doesn't work in the presence of insteadof gitconfig

[Keno]

I had an insteadOf gitconfig that rewrites https into ssh, which caused a --deploy-jll argument to fail with:

Successfully obtained GitHub authorization token!
This token will be used for the rest of this BB session.
You will have to re-authenticate for any future session.
However, if you wish to bypass this step, you may create a
personal access token at https://github.com/settings/tokens
 and add the token to the
~/.julia/config/startup.jl file as:

    ENV["GITHUB_TOKEN"] = <token>
This token is sensitive, so only do this in a computing environment you trust.

[ Info: Cloning wrapper code repo from https://github.com/KenoAIStaging/ClangExtract_jll into /home/keno/.julia/dev/ClangExtract_jll
ERROR: LoadError: GitError(Code:EAUTH, Class:Callback, The explicitly provided credential is incompatible with the requested authentication methods.)
Stacktrace:
 [1] macro expansion
   @ ~/.julia/juliaup/julia-1.7.3+0.x64.linux.gnu/share/julia/stdlib/v1.7/LibGit2/src/error.jl:110 [inlined]
 [2] clone(repo_url::String, repo_path::String, clone_opts::LibGit2.CloneOptions)
   @ LibGit2 ~/.julia/juliaup/julia-1.7.3+0.x64.linux.gnu/share/julia/stdlib/v1.7/LibGit2/src/repository.jl:459
 [3] clone(repo_url::String, repo_path::String; branch::String, isbare::Bool, remote_cb::Ptr{Nothing}, credentials::LibGit2.UserPasswordCredential, callbacks::Dict{Symbol, Tuple{Ptr{Nothing}, Any}})
   @ LibGit2 ~/.julia/juliaup/julia-1.7.3+0.x64.linux.gnu/share/julia/stdlib/v1.7/LibGit2/src/LibGit2.jl:583
 [4] #34
   @ ~/.julia/packages/BinaryBuilder/3eUfg/src/AutoBuild.jl:1132 [inlined]
 [5] with_gitcreds(f::BinaryBuilder.var"#34#36"{String, String}, username::String, password::String)
   @ BinaryBuilder.Wizard ~/.julia/packages/BinaryBuilder/3eUfg/src/wizard/utils.jl:274
 [6] init_jll_package(code_dir::String, deploy_repo::SubString{String}; gh_auth::GitHub.OAuth2)
   @ BinaryBuilder ~/.julia/packages/BinaryBuilder/3eUfg/src/AutoBuild.jl:1131
 [7] init_jll_package(code_dir::String, deploy_repo::SubString{String})
   @ BinaryBuilder ~/.julia/packages/BinaryBuilder/3eUfg/src/AutoBuild.jl:1104
 [8] build_tarballs(ARGS::Any, src_name::Any, src_version::Any, sources::Any, script::Any, platforms::Any, products::Any, dependencies::Any; julia_compat::String, validate_name::Bool, compression_format::String, kwargs::Base.Pairs{Symbol, V, Tuple{Vararg{Symbol, N}}, NamedTuple{names, T}} where {V, N, names, T<:Tuple{Vararg{Any, N}}})
   @ BinaryBuilder ~/.julia/packages/BinaryBuilder/3eUfg/src/AutoBuild.jl:324
 [9] top-level scope
   @ ~/Yggdrasil/C/ClangExtract/build_tarballs.jl:109
in expression starting at /home/keno/Yggdrasil/C/ClangExtract/build_tarballs.jl:109

I think we may want to either warn or ignore the global settings here.

[Keno]

At least I'm consistent